Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Magnesite from
Cedar Mountain Magnesite Mine, Cedar Mountain, Cedar Mountain Mining District, Alameda County, California, USA


Locality type:Mine
Classification
Species:Magnesite
Formula:MgCO3
Comments:Occurs as stringers in serpentine.
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Serpentine Subgroup
Data
Mineral Data:Click here to view Magnesite data
Locality Data:Click here to view Cedar Mountain Magnesite Mine, Cedar Mountain, Cedar Mountain Mining District, Alameda County, California, USA
Data Identifiers
Mindat Occurrence Record ID:322221
Long-form Identifier:1:3:322221:8
GUID (UUID V4):0
Nearest other occurrences of Magnesite
2.7km (1.6 miles) ⓘUnnamed Magnesite occurrence [1], Sugarloaf Butte, Cedar Mountain Mining District, Alameda County, California, USA
2.8km (1.7 miles) ⓘWinship properties [2], Cedar Mountain, Cedar Mountain Mining District, Alameda County, California, USA
7.0km (4.4 miles) ⓘStandard Magnesite Company Mine, Cedar Mountain, Cedar Mountain Mining District, Alameda County, California, USA
7.4km (4.6 miles) ⓘHayes Ranch deposit, Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA
8.2km (5.1 miles) ⓘKing claim, Sugarloaf Butte, Cedar Mountain Mining District, Alameda County, California, USA
10.7km (6.7 miles) ⓘBanta's Camp deposit, Cedar Mountain, Cedar Mountain Mining District, Alameda County, California, USA
19.3km (12.0 miles) ⓘFidelity deposit, Red Mountain, Black Wonder Mining District, Santa Clara County, California, USA
20.4km (12.7 miles) ⓘSecurity Mine (Security deposit), Red Mountain, Black Wonder Mining District, Santa Clara County, California, USA
21.5km (13.3 miles) ⓘWestern Mines (Western Magnesite Mine), Red Mountain, Black Wonder Mining District, Santa Clara County, California, USA
21.7km (13.5 miles) ⓘNumber Six-White Queen group, Red Mountain, Black Wonder Mining District, Santa Clara County, California, USA
References
Bradley, W.W. (1925), Magnesite in California: California Mining Bureau. Bulletin 79: 140
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 248
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
 
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